Wrongfully court martialed from the French Army Captain Hilaire heads to Brazil. Upon arrival he is hired as a foreman in a Diamond mine eventually falling in love with the boss’s daughter, Diane. Remsen who wants both Hilaire’s job and Diane frames him for stealing from the company while Hilarie is away. Convicted, he is sent to a Devil's Island-like prison camp. Eventually, Remson, too is sent there, where he confesses on his death bed, freeing Hilaire.